Packing container



Oct. 23, 1928.

FROIDEVAUX PACKING CONTAINER Filed Dec 2 Sheets-Sheet 1 Attorney Oct.23, 1928.

M. FROIDEVAUX PACKING CONTAINER Filed Dec. 12, 1924 zsheet s-sheet 2 ozWare e1 7% wide va L X Attorney.

Patented Oct. 23 1928.

UNITED) STATES -1,689,018 PATENT OFFICE..-

MAROEL FROIDE'VAUX, OF GENEVA, SWITZERLAND, ASSIGNOR T0 KUSTNER FREBES&; CIE. SOCIETE ANONYME, 0F GENEVA, SWITZERLAND, A. SWISS COMPANY.

PACKING CONTAINER.

Application filed December 12, 1924, Serial No.

10 meable sheet constituting a lid orcover, the

size of the said second sheet being such that it covers the opening ofthe shell as well as at least a portion of its flange, in securing theabove mentioned flange and the edge of the second sheet to each other,and finally in turning down the whole constituted by the edge and theflange, on to the container.

The container is characterized by the fact that it comprises a shellmade of an impermeable sheet provided with an outside flange round itsopening, as well as a cover or lid which is also constitutedby animpermeable sheet, the edge of which projects beyond the said opening,the said flange and edge being secured together and turned over on thecontainer.

Two methods of carrying out the process according to the invention areillustrated by Way of example in the accompanying drawing applied to thepacking of cheese.

Figures 1 to 9 are cross-sectional views of a container according to myinvention in various stages of being closed and sealed.

' Figure 10 shows a partial'modification of the said container, an

' Figures 11 to 17 are views similar to Figures 1 to 9 inclusive showinga different type of container.

- First ofall a shell or body a is formed by stamping out a sheet of tinpaper, the body ofwhich shell is cylindrical and has round its o ening can annular outside flange d (Figure 1) Into the shell thus formed isintroduced the cheese e in fluid or semi-fluid state so asto fill it uptothe level of the flange al- (Figure 2). Thls having been done, overthe said shell and its contents 0 is placed a second sheet fof tin,'ofcircular shape, of a diameter materially smaller than the outer diameterof the flange (1 (Figure 3) The'projecting portion n of the flange d isthen raised into vertica-l position (Figure 4) the inner portion 0 ofthe flange d and the edge ;0 of the sheet are raised so as to bring toan angle of Fig- 755,419, and in Switzerland December 26, 1923.

ure 5) to the horizontal,the portion n is turned down over the edge 3)so as to secure the edge and the flange together in a firm and air-tightmanner (Figure 6). The Whole constituted by the edge 12 and the flange dis then brought into vertical position level with the body I) of theshell a (Figure 7) then into a position inclined over the said body(Figure 8), finally 1t is depressed downwards into the cover f (Figure9) so that it shall not project mate rially beyond the volumedelimitated by the shell 0. When the external pressure is applied tobend the edges of the container and cover,

the thin metal of the container is braced from within by the contentsand held, so as tocooperate with the external pressure and efPable theedges of the container and flange to be so compressed as to form anairtight seam aroundthe outside of the container.

In the modified method shown in Figure 10, the projecting portion n ofthe flange d, after having been placed in vertical position as in Figure4, is directly turned down over the edge p of the sheet f without thesaid edge p and the portion 0 of the flange all having been brought toan inclined position.

According to the second method of carrying out the process, first ofall, a shell on is also form'ed'by stampin out in a sheet of tin paper.The body oft c said shell ais cylindrical and provided round its opening0 with an annular outside flange 03 (Figure 11). Into the shell 0; thusformed is introduced the cheese 6 in a fluid or semi-fluid state so asto fill it to the level of the flange 03 (Figure 12) This having beendone over the said shell-a and its contents e is placed the second sheetof tin paper f of circular shape, the diameter of which is considerablylarger than the outside diameter of the flange d (Figure 13) Theprojecting portion at of the edge of the sheet f is then first turneddownwards (Figure 14) then inwards (Figure 15) so as to secure the edgeand the flange together in a firm and air-tight the diameter of thesheetf, instead of being difierent, could be practically the same. Thecontainer, instead of being of circular shape,

the said body, so that it shall could be of any other desired shape, forinstance that of a rectangle, triangle, sector lozenge. v p

In the method described, the turning down of the edge of the sheet fover the flange d is single and flat, but it could also be double,treble, and havin the shape of a roll. The

I securing of the e ge of the sheet f and of the flange p could bemoreoverueflected in some other manner, for instance by means of radial,or annular perforations or corrugations provided simultaneously in theflange and in the edge.

The packing is for cheese and other food products that are to be put upin a fluid or semi-fluid state. .The container is thereforemade of socalled tin paper or some other very thin flexible metal which can easilbe bent to 've the finished container the orm shown in Figs. 9 and 17.Without tin paper or some similar material the container could not befilled and closed as described without spilling and losing some of thecontents. It 1s therefore quite necessary that the container and coverbe made of some very thin material which allows bending of the theperiphery of the flan filled with substantially solid orsemisolidmaterials, being bent over upon the cover. and and cover beingthen bent over together wlthin the periphery of the container and uponthe cover and ressed down to be flush with the outer suraee of thecover, the materials in the containbeing bent, and cooperatingwith theexternal pressure to cause said edges to form a seam around theoutsidepftlie container.

2. A container'oEf very thin metal comprising a shell having an integralbottom and an opening at the top, an exterior laterally extending flangesurrounding the opening, and a cover to be disposed upon said flange,one of said/parts, after the container has been filled withsubstantially solid or semisolid materials, to have its edges bent overthe edges of the other part and the edges of the cover and flange beingbent then together against the outside surface of the container andpressed inward of the container until they are flush with said surface,the materials in the container bracing the thin metal thereof fromwithin when the edges of the cover and flange are being bent, andcooperating with the external pressure to cause said edges toform a seamaround the outside of'the container.

3. A container of very thin metal comprising a body-having an integralbottom and an o enin at the top, an exterior laterally exten ing angesurrounding said opening, and a cover to be disposed upon the flange,the ed es of the flange and cover, after the container as been filledwith substantial ly solid or semisolid materials, to be turned overtogether and pressed inward of the con-.

tainer until they are flush with the outer surface of the cover, thematerials in the container bracing the thin metal thereof from withinwhen the edges of the cover and flange are being bent, andcooperatingwith the external pressure to cause said edges to form a seam around theoutside of the container;

In testimony whereof I have aflixed my sig- I nature.

MARCEL. FltOIDEVAUX.

